Creating a "portal" or related record

[vasci]

I have a One->many relationship. In a script in the one file (activated by a button called, say, "New Line Item", I want to create a new record in the many file, then set some field values in this record using SetField

This is driving me crazy, as I cannot see how to do this. The "New Record" script step only applies to the current file.

[Pedro]

Look on your relationship if the checkbox "Allow creation of related records" is checked, checking it you will create records on your portal automatically without performing a script to do it.